mlr_pipeops_randomresponse | R Documentation |
Takes in a Prediction
of predict_type
"prob"
(for PredictionClassif
) or "se"
(for PredictionRegr
) and generates a randomized "response"
prediction.
For "prob"
, the responses are sampled according to
the probabilities of the input PredictionClassif
. For "se"
,
responses are randomly drawn according to the rdistfun
parameter (default is rnorm
) by using
the original responses of the input PredictionRegr
as the mean and the
original standard errors of the input PredictionRegr
as the standard
deviation (sampling is done observation-wise).
R6Class
object inheriting from PipeOp
.
PipeOpRandomResponse$new(id = "randomresponse", param_vals = list(), packages = character(0))
id
:: character(1)
Identifier of the resulting object, default "randomresponse"
.
param_vals
:: named list
List of hyperparameter settings, overwriting the hyperparameter settings that would otherwise
be set during construction. Default list()
.
packages :: character
Set of all required packages for the private$.predict()
methods related to the rdistfun
parameter. Default is character(0)
.
PipeOpRandomResponse
has one input channel named "input"
, taking NULL
during training and
a Prediction
during prediction.
PipeOpRandomResponse
has one output channel named "output"
, producing NULL
during
training and a Prediction
with random responses during prediction.
The $state
is left empty (list()
).
rdistfun
:: function
A function for generating random responses when the predict type is "se"
. This function must
accept the arguments n
(integerish number of responses), mean
(numeric
for the mean),
and sd
(numeric
for the standard deviation), and must vectorize over mean
and sd
. Default is rnorm
.
If the predict_type
of the input Prediction
does not match "prob"
or
"se"
, the input Prediction
will be returned unaltered.
Only fields inherited from PipeOp
.
Only methods inherited from PipeOp
.
https://mlr3book.mlr-org.com/list-pipeops.html
Other PipeOps:
PipeOpEnsemble
,
PipeOpImpute
,
PipeOpTargetTrafo
,
PipeOpTaskPreprocSimple
,
PipeOpTaskPreproc
,
PipeOp
,
mlr_pipeops_boxcox
,
mlr_pipeops_branch
,
mlr_pipeops_chunk
,
mlr_pipeops_classbalancing
,
mlr_pipeops_classifavg
,
mlr_pipeops_classweights
,
mlr_pipeops_colapply
,
mlr_pipeops_collapsefactors
,
mlr_pipeops_colroles
,
mlr_pipeops_copy
,
mlr_pipeops_datefeatures
,
mlr_pipeops_encodeimpact
,
mlr_pipeops_encodelmer
,
mlr_pipeops_encode
,
mlr_pipeops_featureunion
,
mlr_pipeops_filter
,
mlr_pipeops_fixfactors
,
mlr_pipeops_histbin
,
mlr_pipeops_ica
,
mlr_pipeops_imputeconstant
,
mlr_pipeops_imputehist
,
mlr_pipeops_imputelearner
,
mlr_pipeops_imputemean
,
mlr_pipeops_imputemedian
,
mlr_pipeops_imputemode
,
mlr_pipeops_imputeoor
,
mlr_pipeops_imputesample
,
mlr_pipeops_kernelpca
,
mlr_pipeops_learner
,
mlr_pipeops_missind
,
mlr_pipeops_modelmatrix
,
mlr_pipeops_multiplicityexply
,
mlr_pipeops_multiplicityimply
,
mlr_pipeops_mutate
,
mlr_pipeops_nmf
,
mlr_pipeops_nop
,
mlr_pipeops_ovrsplit
,
mlr_pipeops_ovrunite
,
mlr_pipeops_pca
,
mlr_pipeops_proxy
,
mlr_pipeops_quantilebin
,
mlr_pipeops_randomprojection
,
mlr_pipeops_regravg
,
mlr_pipeops_removeconstants
,
mlr_pipeops_renamecolumns
,
mlr_pipeops_replicate
,
mlr_pipeops_scalemaxabs
,
mlr_pipeops_scalerange
,
mlr_pipeops_scale
,
mlr_pipeops_select
,
mlr_pipeops_smote
,
mlr_pipeops_spatialsign
,
mlr_pipeops_subsample
,
mlr_pipeops_targetinvert
,
mlr_pipeops_targetmutate
,
mlr_pipeops_targettrafoscalerange
,
mlr_pipeops_textvectorizer
,
mlr_pipeops_threshold
,
mlr_pipeops_tunethreshold
,
mlr_pipeops_unbranch
,
mlr_pipeops_updatetarget
,
mlr_pipeops_vtreat
,
mlr_pipeops_yeojohnson
,
mlr_pipeops
library(mlr3) library(mlr3learners) task1 = tsk("iris") g1 = LearnerClassifRpart$new() %>>% PipeOpRandomResponse$new() g1$train(task1) g1$pipeops$classif.rpart$learner$predict_type = "prob" set.seed(2409) g1$predict(task1) task2 = tsk("mtcars") g2 = LearnerRegrLM$new() %>>% PipeOpRandomResponse$new() g2$train(task2) g2$pipeops$regr.lm$learner$predict_type = "se" set.seed(2906) g2$predict(task2)
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